.download{
    margin-top: 30px;
    display: flex;
}
.tabs{
    width: 160px;
}
.title{
    width: 100%;
    height:40px;
    background:#00a0ea;
    line-height:40px;
    text-align: center;
    color: #fff;
}
.tabs{
    width: 170px;
    height:500px;
}
.tabs ul{
    width: 100%;
    margin-left: -43px;
}
.tabs ul li{
    height:40px;
    line-height:40px;
    padding-left: 10px;
    border-bottom: 1px solid #dcdcdc;
    cursor: pointer;
    color:#303133;
    text-align: center;
}

.tabs ul li.active{
    color:#00a0ea;
}

.download_list{
    width: 100%;
    margin-left:30px;
}
h3{
    height: 40px;
    line-height: 40px;
    background: #00a0ea;
    color: #fff;
    padding-left: 30px;
}
.download ul{
    width: 100%;
    position: relative;
    height:328px;
    margin-left:-30px;
}
.download ul li{
    height:40px;
    line-height:40px;
    color: #777;
    border-bottom: 1px solid #f2f1f7;
}
.download ul li span{
    position:absolute;
    left:500px;
}
.download ul a{
    position: absolute;
    right: 20px;
}